Oxygen Sensor Replacement Estimate for Mercedes-Benz S400

Mercedes-Benz S400 Oxygen Sensor Replacement costs $240 on average. Following is a breakdown of the labor and parts estimates.

Skip the repair shop - our mechanics come to you
YourMechanic Price
$184 to $309
Labor: $70 -$80
Parts: $114 -$229
Average Dealer price
$321 to 551
Average Shop price
$226 to 370
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Get a quote
CarServiceYourMechanic PriceShop/Dealer Price
2010 Mercedes-Benz S400V6-3.5L HybridService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$192.97Shop/Dealer Price$249.13 - $360.42
2010 Mercedes-Benz S400V6-3.5L HybridService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$299.12Shop/Dealer Price$381.93 - $572.92
2011 Mercedes-Benz S400V6-3.5L HybridService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$312.92Shop/Dealer Price$399.10 - $600.37
2012 Mercedes-Benz S400V6-3.5L HybridService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$312.92Shop/Dealer Price$399.13 - $600.44
2011 Mercedes-Benz S400V6-3.5L HybridService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$192.97Shop/Dealer Price$249.15 - $360.45
2012 Mercedes-Benz S400V6-3.5L HybridService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$192.97Shop/Dealer Price$249.12 - $360.40
Show example Mercedes-Benz S400 Oxygen Sensor Replacement prices

Parts required for a Mercedes-Benz S400 Oxygen Sensor Replacement

Meet some of our expert Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

160 reviews
Carlos
11 years of experience
Always professional and my favorite mechanic
2008 MERCEDES-BENZ C300 - OIL CHANGE
Want Carlos's expert advice? Ask your question now. Its free!
124 reviews
Jerel
6 years of experience
He was great, very professional
2004 MERCEDES-BENZ ML350 - VALVE COVER GASKET REPLACEMENT
Want Jerel's expert advice? Ask your question now. Its free!
20 reviews
Joseph
15 years of experience
Excellent mechanic. He completed the car service in timely manner. Rate:10
2001 MERCEDES-BENZ ML320 - POWER STEERING PUMP REPLACEMENT
Want Joseph's expert advice? Ask your question now. Its free!
16 reviews
Mike
11 years of experience
Mike was excellent to work with. He was on time, courteous, completed a full inspection and offered his honest feedback in regards to a used car purchase. I would recommend Mike to anyone!
2009 MERCEDES-BENZ C300 - PRE-PURCHASE CAR INSPECTION
Want Mike's expert advice? Ask your question now. Its free!

All about Oxygen Sensor Replacement

With each new model year, manufacturers are adding more oxygen sensors to better manage engine operation. Some high performance engines have an oxygen sensor for each cylinder as well as one for the rear of each catalytic convertor. The sensors are located either underneath the hood or underneath the car. The oxygen sensors are connected (screwed) to the exhaust pipe, either in front or back of the catalytic converter. The front (upstream) sensors measure the amount of oxygen in the exhaust system. The purpose of the front oxygen sensor(s) is to measure how rich or lean the gases are as the gases exit the combustion chamber. Depending upon whether the exhaust gas is lean (high in oxygen content) or rich (low in oxygen content), the amount of fuel entering the engine is adjusted by the engine management computer to try and maintain an ideal mixture that produces the lowest emissions output from the catalytic convertor. Rear (downstream) sensors are located behind the catalytic converter. The purpose of the rear oxygen sensor(s) is to monitor the oxygen content of the exhaust gases leaving the catalytic convertor. If one or more of the oxygen sensors are faulty, your car may not pass the emissions test. If you drive your car with a faulty oxygen sensor, you may get poor gas mileage and it can damage the catalytic converter.

Oxygen Sensor Replacement Estimates for Popular Mercedes-Benz Models